Why are most native-born Americans unwilling to pick oranges, and what challenges do illegal immigrants who do that work face?

pride

Explanation:

The main reason native-born Americans are unwilling simply comes down to pride. Basically, they feel as though it is beneath them and are entitled to something better. This also comes from societal pressure. Immigrants on the other hand do not have many options and accept these types of jobs because it is simply a job that will pay. Unfortunately, due to not having many options most illegal immigrants are exploited and paid well below minimum wage to work more hours than a normal full-time job is supposed to allow.

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.

responsibilities im assuming